code: def __exit__(self, *excinfo):
      pass
  
file_path: vowpal_wabbit/utl/active_interactor.py
imports: import socket
  import argparse
  from typing import Callable, ContextManager, Optional, TextIO
  import contextlib
label_desc: Use image node_id 2 for calling the backported_nullcontext obj's underlying member method code with example usage: obj.__exit__() without return types